Wall form



July 14, 1953 F. BILLINGS 2,644,997

WALL FORM Filed April 16, 1952 2 Sheets-Sheet 1 Frank Billings IN VENTOR.

y 4. 1953 F. BILLINGS 2,644

WALL FORM Filed April 16, 1952 2 Sheets-Sheet 2 I2 50 I6 .38 W 38 50 a34 1 4 30 -3 0". 2s 26 32 -.4 .--5 ili plf-i if 36 I4 I4 22 4o 24 FrankBillings INVENTOR.

Patented July 14, 1953 UNITED STATES PATENT OFFICE WALL FORM FrankBillings, Montesuma, Ind. Application April 16,1952, Serial Nor 282,587

Another important object of the present in-.

vention is to provide a key-forming mold element including a pluralityof juxtapositionedstrips that are clampingly secured togetheriand whichhold a resilient channel that will extend between a pair of walls toform a keyway in one side of or in an edge of a wall formed by pouring acementitious material between the walls.

A further object of the present invention is to provide a key-formingmold element for wall forms adapted to form keyways in wall sections, sothat wall sections may bejoined to form an exterior wall; an exteriorwall having a partition; a corner wall; and/or a wall of panelconstruction. I

A still further aim of the present invention is to provide a key-formingmold element of the aforementioned character that is simple andpractical in construction, strong and reliable in use, inexpensive tomanufacture, and otherwise well adapted for the purposes for which thesame is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed,'reference'being had to the accompanying drawings forming part hereof,wherein like numerals refer to like parts throughout, and in which:

Figure l is a perspective view of the key-forming mold element;

Figure 2 is avperspective view of the channel forming part of the moldelement;

Figure 3 is a horizontal sectional view of a wall-form showing the moldelements incorporated therein and forming keyways in the vertical edgesof a wall;

Figure 4 is a fragmentary horizontal sectional view similar to Figure 3but showing'themold element removed with the channel stillengaged withthe formed wall; E

Figure 5 is a view similar to Figure 4'but showing the flanges of thechannel forced together in order to permit the channel to be removedfrom the keyway formed in the wall section;

Figure 6 is a horizontal sectional view showing the manner in which twowall sections are joined;

Figure 7 is a horizontal sectional view showing the manner in which themold element is applied ,2cla mants-131),"

to a wall form in order to provide a keywayin one side face of a wallsection;

perpendicularwall sections are joined; Figure 9 is a fragmentaryhorizontal sectional view showing the manner in which two outer wallouter sides of the leg portions.

Figures is a fragmentary horizontal sectional view showin the manner inwhich two relative] sections are joined to each other and to a partitionwall section;

Figure 10 is a fragmentary horizontal sectional view showing the mannerin which two walls, of panel construction, are joined together; and,

t Figure 11 is a fragmentary perspective view of a corner wall sectionformed by using a pair of the mold elements, as shown in Figure 1, inconjunction with a corner mold.

Referring now to the drawings in detail, wherein for the purpose ofillustration, there is disclosed a preferred embodiment of the presentinvention, the numeral l0 represents the keyforming mold elementgenerally, comprising a pair of elongated rigid strips l2 and M whichare equal in length, thickness and width. The strips I2 and I4 areprovided with longitudinally spaced apertures It and I8, and theapertures it are in registry with the apertures I8 to receive bolts 20having heads 22 that are received in countersinks 24 provided in theouter faces of stri l2, at the outer ends of the apertures It.

An elongated rigid rib element 26 constitutes apart of the key-formingmold element I 0. The rib element 26 is of a length substantially equalto the length of the strips [2 and [4, however the rib element isthinner but wider than the strips, as shown best in Figure 3. The ribelement is provided with a plurality of longitudinally spaced apertures28 that accommodate the edges 34 and 36 of the strips l2 and [4 whilethe inner edge 30 of the rib element projects well beyond the inneredges 38 and 40 of the strips [2 and I4.

'I'he key-forming mold element It is also provided with a resilient,elongated channel 42 having a pair of spaced parallel leg portions 44and 46 that are joined by an arcuate web portion 48 whose sides projectlaterally outwardly from the Leg portions 44 and 46 straddle the inneredge 30 of -the rib element 26 and the edge 30' is partially positionedin the curved web portion 48 as shown in Figure 3. The leg portions 44and 46 also contact the-inner faces of the strips l2 and I4 and areclamped against the rib element and the strips as nuts 50 on the bolts20 are tightened to retain the strips, rib element andchannel injuxtaposition.

and W to clampingly retain the mold elements.

In between the same.

The bottom of the elongated hollow mold formed by the elements I!) andthe walls W and.

W is closed by suitable means so that themember may retain acementitious material; poured into the open top of the mold member.cementitious material is. allowed to harden, after which the nuts 50 areloosened and the strips [2,

'l-4"a-nd rib element 26 arepulled away from the walls W and W Thewalls'W'and W are also removed from the formed panel or wall sectionS'leaving only the channels 42' engagedwith the wall section S, as shownin Figure 4.

The'fianges 44 and 46 are then bent into engagement with each other,asshown' intFigure '-5,'so that the channels 42 may be withdrawn fromthe vertical keyways K formed in the vertical s'ide'edges of the Wallsection -S.

The two wallsectionss and s formed'in the above 'manner are disposed. incoplanartrelation,

with the-keyway K and one verticali edge of section S being inregistrywith the keyway K in 'onezverticaledge of the section S and with theedges of'the sections S and S abutting each other, as shown in Figure 6.A suitable binder B isthen poured in the registering keyways K and Kandjoins the. sections 3 and S Figure-7 showshow the key-forming.mold'element I19 maybe :used to form a vertical keyway K inone'sidefaceof a wall section S In this illustration, the'vertical filler strips 52and are secured to the edges 38 and 40 of thestrips I2 and l4' by.fasteners or the like.

The mold member M is formedwith a slot or opening in one of its verticalside walls W to receive the element in with the strip- 54 engagingthe'edge'ofthe-opening O andzwith-istrip 52 engaging the inner faceofthe'end wall W of the mold member. The inner faces of the strips 52,54'. are-fiushwith each other and the inner face of wall W Concretepoured in the mold member. M will harden after which the'mold memberis-disas- The.v

each composed of inner and outer wall sections S and S Sections S and Sare formed like the wall section S in order to include the verticalkeyways K and K. The keyways of the sections of. panel P are inregistry. with eachother and the keyways in the sections of the panel Pare also in registry with each other. The edges of the panels P and Pabut, as shown in Figure 10, and registering grooves G and G are formedinjthe abutting edges to form communication betweenthe keyways of thepanels.

A suitable binder B is placed in the keyways flit) join the sections ofeach panel and to join sembledand'the element It removed. to-form thekey-way'K Thewall section S may then betied to'a wall section-S disposedperpendicular thereto by placing the-keyway K in-registry'with keyway-Kand filling thekeyways with-a binder B as shown in Figure-8.

Figure 9 shows how two wall sections S and 5 formed with keyways K andKi, may be joined to apartition wall S having a keyway K Theedge of thepartition wall S having the keyway, K overlaps the abutting edges of'thesections 8 and S and grooves G and G are formed in the inner faces ofthe sections S -and S to form communication between theregistering-keywa-ys K andK and thekeyway K A. suitable binder B. isthen poured .into' the 'keyways' K K K andgrooves G and G to join thepartition wall S to the wall-sections S and S and the wall sections Sand S together.

Fig-ure'lo shows a joint between panels of a wall structure wherein thepanels P and..P ;-are

the panels. Additional registering grooves G maybe provided in thesections S of the panels P and P whereby a partition wall may be tiedinto the panels in a manner similar to that shown-in Fi ure 9.

Figure: 1 1' shows a-corner for apanel wall that is for-med by using twoof the elements In in conjunction with a pair of angulated mold walls.

The corner C will be provided with relatively perpendicular portions Cand C whose outer vertical edges have keyways C and C formedthereinai-for joiningi'with keyways of wall sectionszsuch. as S;

In" view-of the foregoing description taken in conjunction with theaccompanying drawings it is believed: that a clear understanding of thedevice will be quite apparent to those skilled in this-:art. Amoredetailed description is accordingly deemed-unnecessary.

It is to be understood, however, that even r though=there-isherein shownand described a preferredembodiment of theinvention, the same issusceptible to' certain changes fully comprehended bythespirit of theinvention as herein described and-the scope oftheappended claims.

Having thus described the invention, what is claimed as .new. is:

"1. A form-for concrete wallmembers, said-form comprising, an elongatedopen-ended hollow member having spaced side wallsand removableend-pieces eachofsaidend pieces being composedof two' strips having.inner edges received between said side Walls, a rib element clampedbetween each .pair of strips,- said rib elements projectinginWardly..-beyond. the inner edges of the strips,'andza.resilientchannel about the inner edgesof theiribelementsand.having their flangesclampedbetween the, rib elementsand strips.

2. As a new article of manufacture, a device for forming a keyway in awall. and adapted to constitute a part of a wall form,.said devicecomprising a pair .of elongated strips of uniform width, lengthandthickness; a rib element disposed between-the strips and having anedge projecting outwardly beyond the edge of each strip,.aresilientchannel receiving the said edge of the rib element therein, theflanges of said channel being. disposed between the rib element andfthe.strips, and. fasteners. joining the strips and clamping theribelementand the flanges of the channel between the strips.

FRANK BILLINGS.

"References Cited in the file of this patent UNITED "STATES PATENTSNumber Name Date 442,957 Curran Dec. 16, 1890 1 43!);646 Smith Dec. 19',1922 .1,6L'7,-,52.7 -Knight Feb. 15, 1927 1,801,631 Knight;. Apr; 21,1931

